Head-to-head · Email Anti-Spam Software
MX Guarddog vs Sophos Email
MX Guarddog leads on 3 checks, Sophos Email on 0, and 0 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreMX Guarddog · 8.5/10
- Free planonly MX Guarddog
- Most featuresMX Guarddog · 2 of 3
MX Guarddog scores higher on our rubric for email anti-spam software: 8.5 against 6.5 out of 10; our editors rank them #2 and #8.
MX Guarddog offers free plan; Sophos Email doesn't. MX Guarddog offers phishing detection; Sophos Email doesn't publish it. MX Guarddog offers malware scanning; Sophos Email doesn't publish it.
MX Guarddog is the better fit for budget-conscious domain owners. Sophos Email is the better fit for organizations needing broad, modern email protection.
- MX Guarddog fits best
Budget-conscious domain owners
- Sophos Email fits best
Organizations needing broad, modern email protection
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Side by side
| Feature | MX Guarddog 8.5/10 Visit ↗ | Sophos Email 6.5/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.5 | 6.5 |
| Ranking | #2 in Email Anti-Spam Software | #8 in Email Anti-Spam Software |
| Best for | Budget-conscious domain owners | Organizations needing broad, modern email protection |
| Pricing model | Free plan + paid | Paid |
| Starting price | Not published | Not published |
| Free plan | ✓ (best) | — |
| Free trial | — | — |
| Free trial length | 30 days · no card needed | 30 days |
| Deployment | Cloud | Cloud |
| Platforms | Web | Web |
| Integrations | 3 integrations | 5 integrations |
| Features MX Guarddog 2/3 · Sophos Email 0/3 | ||
| Phishing detection | ✓ (best) | Not published |
| Malware scanning | ✓ (best) | Not published |
| Attachment scanning | Not published | Not published |
| Specs | ||
| Quarantine access | User_and_admin | Not published |
| Supported mail platforms | Standard SMTP email servers for owned domains; not consumer Gmail or Hotmail accounts | Not published |
| Quarantine retention | 7 days | Not published |
| Deployment type | Cloud_gateway | Not published |
| Our review | ||
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| Our verdict | MX Guarddog is a hosted email security service for organizations, individuals and domain owners operating their own email servers. It routes incoming mail through MX Guarddog data centers, scans messages for spam, phishing, malware and… Read the review → |
Sophos Email is a cloud-managed email security product for business, educational, and government organizations. It protects mailboxes against phishing, business email compromise, spam, malicious URLs, malware, ransomware delivery, and… Read the review → |
Strengths and trade-offs
MX Guarddog — where it wins
- Spam, phishing, malware and virus scanning
- Quarantine access with message release and reports
- 168-hour outage spooling with TLS encryption
Where it doesn't
- Does not support consumer Gmail or Hotmail accounts
- Designed for owned domains using standard SMTP servers
- Free access requires visible website text links to earn tokens
Sophos Email — where it wins
- AI detection covers phishing, malware, QR-code, and image-based threats
- Combines sandboxing, URL protection, clawback, DLP, and encryption
- Integrates with Microsoft 365, Google Workspace, Sophos MDR, and XDR
Where it doesn't
- Pricing requires contacting sales
- There is no perpetual free plan
- Cloud deployment may not fit organizations requiring another deployment model
- MX Guarddog8.5/10 · Free plan · paid from $0.25/mo · 30-day trial
A low-cost cloud gateway for domain owners who run their own email servers.
Visit MX GuarddogFull verdict → - Sophos Email6.5/10 · Pricing on request · 30-day trial
Broad cloud email protection spanning phishing, malware, impersonation, DLP, and encryption.
Visit Sophos EmailFull verdict →
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All email Anti-Spam software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
Last updated · How we research and update






